Fluid-pressure-regulating valve.



PATENTED JAN. 20, 190,3.-

J. L. CHAPMAN. FLUID PRESSURE REGULATING VALVE.

APPLIGATION FILED APR. 4, 1902.

F0 MODEL.

In U6 nior (flacpfi kC/Zapman TlNiTnn STATES PATENT OFFICE.

JOSEPH L. CHAPMAN, OF HADDONFIELD, NEW JERSEY, ASSIGNOR TO WAT- SON AND MCDANIEL COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

FLUID-PRESSURE-REGULATING VALVE.

SPECIFICATION formingpart of Letters Patent No. 718,694, dated January 20, 1903. Application filed April 4, 1902. Serial No. 101,307. (No model.)

T at whom, it may concern: has partitions 11 12, which separate the pipes Be it known that I, JOSEPH L. CHAPMAN, a 2 3. VVater-passage 13 is bored between the citizen of the United States, residing at Hadpartitions, and thereunder the valve already donfield, in the county of Camden and State described controls the water-passage. Above s5 5 of New Jersey, have invented certain new passage 13 is a cylindrical part 11, within and useful Improvements in Fluid-Pressurewhich is a piston 15, surrounding part 18 of Regulating Valves, of which the following is the stem and provided on its under side with a specification. a soft cupped packing 16, of leather or simi- My invention relates to reducing-valves for lar material. Cup 16 rests upon a shoulder 6o 10 the control of fluid-pressure. By means of 19, formed on the stem, and the lower edges their use a high inlet-pressure may be reof the cup pass below the shoulder on which duced toalower delivery-pressure. In houseit rests, in order to allow pressure to bear hold,factory, and office buildings where pipes within its lower edges to press them to the are run to the various rooms the strain on cylinder and prevent leakage. Piston is 65 IS the pipes, if carrying high pressure, causes formed cup-shaped on its under side, so that leakages, expensive repairs, and the liability it may press snugly on the cup. Above pisof heavy damage in case of flooding. The ton 15 a spring-seat is supported on the water-hammer under high pressure is very stem and carries a spring 21. Above spring damaging to the pipe-joints whenever the 21 is mounted a seat 22, receivinga screw 23, 70 20 water is suddenly shut off. A flow of water which is screwed through the top of coversufficient to supply all of the attachments of case 24, the cover being screwed to case 1 at a building and no more with an even and its lower end. Ahand-wheel 25 is the means steady flow will save much wasting and employed to increase or decrease the tension splashing, and where the water is served on spring 21,and thereby overcome the equi- 75 25 through a meter a great saving in charges librium of valve 5 and piston 15 and open will result, as the valve can be set to reguvalve 5, and whenever the pressure under late a required supply. valve 5 exceeds the pressure of spring 21 the My invention is illustrated in the accomvalve will close, and this is the means to regupanying drawings, in which late the delivery-pressure beyond the valve, 80 Figure 1 is a central vertical section of the and a nut 26 looks the adjustment.

valve and case as arranged for very high pres- The mechanism just described is my arsures. Fig. 2 is in part an elevation and in rangement of the valve for very high prespart a section of the valve as arranged for sures. For low pressuresI interpose between lower pressures. Fig. 3 is an enlarged view case 1 and cover 2% a chamber 27, composed of 85 of the valve partlyin elevation and partlyin alowerpart 28 and an upperpart 29,and theresection. Fig. 4 is an upper end view. Fig. in place a diaphragm 30, made of a flexible 5 is a lower end view. Fig. 6 is a section on material, and secure it between a lower plate line 00 50, Fig. 3. 31, secured to the valve-stem and having an Similar figures of reference indicate simiupward projection passing through the dia- 0 4o lar parts throughout the views. phragm and an upper plate 33,withanut 34 for By reference to Figs. 1, 2 it will be seen securing the parts to the diaphragm. Above there is a valve-case 1, having an inlet or supthe nut 31 is placed spring 21 and seat, and ply pipe 2 and an outlet or delivery pipe 3, these parts are operated, as alreadydescribed, and within the case a flat seat 4.- is formed, for the valve as when arranged for high pres- 5 under which seats a soft disk 6, of leather or sure. A passage 35, formed in case 1, perolher suitable material, forminga compressimits pressure to pass to chamber 27 to press ole seat for the valve 5, to which it is removdiaphragm 3O upward against spring 21. In ably secured by-nut 7on stem 8 against plate both instances the valve-stem 8 is guided 9, formed on the rectangular part 10 of the through a bar 36 in cap-nut 37, the cap being I00 valve-stem. This enables the renewal of the screwed to case 1 and being of sufficient disoft disk and insures atight valve. The case 'ameter to admit the valves to the case. As

the valve is balanced the adjustment of the spring overcomes the balan ce-pressure on the inlet side and holds the valve open until the pressure on the outlet or delivery side accumulates sufficiently to overcome the pressure exerted by the spring, when the valve will close. By increasing the tension on the spring the pressure will be correspondingly increased on the delivery side of the valve, and vice versa. An air-hole 38 is formed in covercase 24.

I clait 1. In a fluid-pressure regulator, a case, an inlet thereto, an outlet therefrom, a disk valve having a soft face, and a cupped piston having a soft packing, the piston and valve being fixed to a stem having guiding means below the disk valve, and means coacting therewith, to limit the flow past the disk valve.

2. In a fluid-pressure regulator, a case, an inlet thereto and an outlet therefrom, a valve and a piston connected and coacting in the case, one being a flat disk with a soft disk face, and one being a cupped piston with a soft packing, a guide for the connection of the valve and piston and located below the disk valve, and means connected to and controlling the valve and piston in manner to limit the pressure of the fluid passing the disk valve.

3. In a fluid-pressure regulator, a case having a fluid-entrance and a fluid-exit, a disk valve having a soft face and located to intercept or permit the flow, and removably connected to a piston on the same stem, and adapted to balance the pressure exerted on the disk valve, a lower guide for the stem, and means connected to the valve and piston to counteract a predetermined pressure under the valve and permit any excess of such predetermined pressure to close the disk valve and the flow to the exit aforesaid.

4. In a fluid-pressure regulator, a case having a fluid entrance and exit, a soft-faced disk valve located to intercept or permit the flow, a piston removably connected to the disk valve on a common stem and adapted to balance the pressure on the disk valve, a guide at the lower end of the stem, and means connected to the valve-stem to counteract a predetermined pressure under the disk valve,and permit any excess of such predetermined pressure to close the disk valve and the flow to the exit aforesaid.

5. In a fluid-pressure regulator, a case, a fluid-entrance thereto, a fluid-exit therefrom, a soft-faced disk valve and a piston coacting to intercept the exit, removably joined to each other, and put in equilibrium by the inflowing pressure, a spring arranged and adapted to press upon the valve and piston and open the fluid-passage against pressure on the delivery side, and means for the adjustment of the spring to regulate the amount of flowing, and a guide below the lower valve.

6. In a fluid-pressure regulator, a case, a fluid-entrance thereto, a fluid-exit therefrom, a soft-faced disk valve and a cupped piston coacting to intercept the exit, removably joined to each other by a common stem guided at its lower end, a chamber above the case, a flexible diaphragm in the chamber, a fluidpassage from the case to the chamber and under the diaphragm, a spring adapted to press down the diaphragm and the valve, and means for its adjustment.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH L. CHAPMAN.

\Vitnesses:

RANSOM O. WRIGHT, WILLIAM C. STonvER. 

